package ltd.ninefish.framework.redis.configure;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONReader;
import com.alibaba.fastjson2.JSONWriter;
import com.alibaba.fastjson2.filter.Filter;
import ltd.ninefish.framework.core.constant.NfConst;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.lang.reflect.Type;
import java.nio.charset.Charset;

/**
 * @author zhaoxiubin
 * create-time 2024-01-13 20:49
 * description Redis使用FastJson2序列化
 **/

public class FastJson2JsonRedisSerializer <T> implements RedisSerializer<T>
{
    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    public static final Filter AUTO_TYPE_FILTER = JSONReader.autoTypeFilter(NfConst.JSON_WHITELIST_STR);

    private Class<T> clazz;

    public FastJson2JsonRedisSerializer(Class<T> clazz)
    {
        super();
        this.clazz = clazz;
    }

    @Override
    public byte[] serialize(T t) throws SerializationException
    {
        if (t == null)
        {
            return new byte[0];
        }
        return JSON.toJSONString(t, JSONWriter.Feature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    @Override
    public T deserialize(byte[] bytes) throws SerializationException
    {
        if (bytes == null || bytes.length <= 0)
        {
            return null;
        }
        String str = new String(bytes, DEFAULT_CHARSET);

        return JSON.parseObject(str, (Type) clazz, AUTO_TYPE_FILTER);
    }
}
